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ICD-10-PCS 2027 procedure code

028D4ZZDivision of Papillary Muscle, Percutaneous Endoscopic Approach

✓ Valid for 2027O.R. procedure

Short description: Division of Papillary Muscle, Perc Endo Approach

Code unchanged since ICD-10-PCS took effect on October 1, 2015. Source: official FY2027 ICD-10-PCS release from CMS. Page updated September 29, 2026. About our data

About 028D4ZZ

028D4ZZ is the ICD-10-PCS code for a division procedure on the papillary muscle using a percutaneous endoscopic approach. In ICD-10-PCS, division means cutting into a body part, without draining fluids and/or gases from the body part, in order to separate or transect a body part.

In plain terms, this corresponds to operations on papillary muscle, the ICD-9-CM procedure title it maps to (35.31).

For a different body part, codes include 02884ZZ (conduction mechanism) and 02894ZZ (chordae tendineae).

The same procedure with a different approach is coded 028D0ZZ (open) and 028D3ZZ (percutaneous).

It is an operating-room procedure in the MS-DRG logic for DRG 228 (Other Cardiothoracic Procedures with MCC) and DRG 229 (Other Cardiothoracic Procedures without MCC), under the surgical category “Other Cardiothoracic Procedures”.

It has been valid since ICD-10-PCS took effect on October 1, 2015.

What each character means

1. Section
0Medical and Surgical
2. Body System
2Heart and Great Vessels
3. Operation
8Division

Cutting into a body part, without draining fluids and/or gases from the body part, in order to separate or transect a body part

All or a portion of the body part is separated into two or more portions

Includes: Spinal cordotomy, osteotomy

4. Body Part
DPapillary Muscle
5. Approach
4Percutaneous Endoscopic

Entry, by puncture or minor incision, of instrumentation through the skin or mucous membrane and any other body layers necessary to reach and visualize the site of the procedure

6. Device
ZNo Device
7. Qualifier
ZNo Qualifier

Other versions of this procedure

MS-DRG v44.0 grouping

All DRGs →

Surgical MS-DRGs this procedure can group to, depending on the principal diagnosis's MDC.

MDC 05 · Diseases and Disorders of the Circulatory System · Other Cardiothoracic Procedures

ICD-9-CM equivalent

Converter →
  • 35.31Operations on papillary muscleapproximate

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about 028D4ZZ

Is 028D4ZZ a valid ICD-10-PCS code for 2027?

Yes. 028D4ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 028D4ZZ an O.R. procedure?

Yes. 028D4ZZ is an O.R. procedure in MS-DRG v44.0.

What DRG does 028D4ZZ group to?

Depending on the principal diagnosis, 028D4ZZ can group to MS-DRG 228 and MS-DRG 229.

What is the ICD-9 procedure code for 028D4ZZ?

The CMS GEMs map 028D4ZZ to ICD-9-CM 35.31 (Operations on papillary muscle).